Pharmaceutical compound containing the sodium-silver compound of thiodiglycolic acid



Patented Nov. 25, 1924.

UNITED STATES PATENT OFFICE.

HANS HAHL AND HERMANN WEYLAND, 0F ELBERFELD, GERMANY, ASSIGNOBS TO FARBENFABBIKEN VO'RM. FRIEDR. BAYER AND CO., OF LEVERKUSEN, NEAR COLOGNE-ON-THE-BHINE, GERMANY.

PHARMACEUTICAL COMPOUND CONTAINING THE SODIUM-SILVER COMPOUND OF THIODIGL'YCOLIC ACID.

' 1T0 Drawing.

To all whom it may concern:-

Be it known that we, HANS Ham. and HERMANN VVEYLAND citizens of Germany, residing at Elberfel in the State of Prussia, Germany, have invented new and useful Improvements in a Pharmaceutical Compound Containing the Sodium-Silver Compound of Thiodiglycolic Acid, of which the following is a specification.

We have found that a new and valuable silver compound is obtained by treating the thiodiglycolic acid oBr-ooort CHr-OOOH with a silver compound and then neutralizing. It is a valuable remedy against gonorrhea and is of neutral reaction and free from any irritating action. It is a whitish powder easily soluble in water. Its aqueous solutions do not decompose.

In order to illustrate our new process Application filed June 22, 1923. Serial No. 647,171.

more fully the following example is given, the parts bein by weight:

300 parts of solved in 700 parts of water and treated with 69 arts of carbonate of silver. The mixture 1s neutralized with carbonate of sodium, the solution heated on the water thiodiglycolic acid are disbath for one hour, filtered and poured into und 

